As part of the 2014 Bachfest Leipzig, the Bach Medal of the City of Leipzig, made of Meissenporcelain, was awarded to the Akademie für Alte Musik Berlin. Since this award has previously gone only to outstanding soloists and conductors, this was the first time that an ensemble specializing in eighteenth-century performance practice has been honored with the Bach Medal.

During the presentation ceremony on 20 June 2014 in the Altes Rathaus in Leipzig, the Mayor of Leipzig, Burkhard Jung, and the director of the Bach-Archiv Leipzig, Peter Wollny, declared that, “The Akademie für Alte Musik Berlin includes in its core repertoire the transition from Baroque to Classical, thereby encompassing the musical generations of J. S. Bach, his sons and beyond, all the way to Mozart. Scarcely any other ensemble would be better suited to this honor on the occasion of the three-hundredth birthday of Carl Philipp Emanuel Bach, . . . and the individual accomplishments of each ensemble member, along with their unique ability to play so well together, . . . are noted with greatest appreciation.”

Founded in 1982 in the former East Berlin by members of the Staatskapelle Berlin and the Berlin Symphony Orchestra, the Akademie für Alte Musik Berlin was one of the very few instrumental ensembles of the German Democratic Republic that pursued historical performance practice, a discipline that was generally dismissed as being nothing more than a “Western fad.” Today, the ensemble belongs to the world elite of chamber orchestras. Concerts and recordings of the orchestra have set interpretive standards for the works of Bach, and the Academy is regularly featured at major musical centers throughout the world.

The exploration of the mysteries of harmony that began in the sixteenth century has much in common with the exploration of the real world with the help of the natural sciences and critical thinking. Similarly, the journeys into the most remote key areas were only possible after composers had learned to look behind the rigid system of modes and hexachords and began to see the sheer unlimited possibilities of transposition and modulation. Since these harmonic experiments were long considered a secret art, it is no surprise that they were confined to solo keyboard instruments, where chords and their progressions could be handled by the ten fingers of the two hands and where the composer and the performer were often the same person. Yet at first the keyboard with its preset and fixed tuning allowed excursions into remote key areas only to a limited degree. As a consequence, adjustments to the old Pythagorean tuning were necessary, and this led to various forms of mean-tone and irregular temperament culminating in the establishment of equal temperament in the early nineteenth century.

J. S. Bach’s monumental double cycle of The Well-tempered Clavier (BWV 846-93) has always been regarded as a major landmark in the history of keyboard music and the utilization of the full spectrum of keys. The first part, containing preludes and fugues through all twenty-four major and minor keys, was completed in 1722; the second, of the same scope, followed around 1739/40. Although The Well-tempered Clavier is often associated with the use of equal temperament, we know from various documents that Bach – like most of his contemporaries – actually favored a pragmatic temperament that made playing in remote tonal areas possible but at the same time kept the variegation of the individual keys. The unique artistic value of Bach’s double cycle lies not merely in the comprehensive treatment of this key system, but rather in the idea of combining the richness of harmonies he explores with an equally comprehensive richness of musical styles and composing techniques.

Bach drew his inspiration from various models – some of which will be introduced 22-27 June 2014 during the keyboard program presented by Andreas Staier and Peter Wollny at the thirteenth-century Royaumont Abbey north of Paris. One of the earliest journeys through the key areas is taken in John Bull’s Fantasia Ut, re, mi, fa, sol, la, which leads a simple diatonic subject set in a strictly contrapuntal fashion by means of transposition through a labyrinth of harmony. Another way of exploring the spectrum of keys is the free improvisatory style called stylus phantasticus in the seventeenth century. A fine example of this type of composing is Georg Böhm’s Praeludium, Fuga et Postludium in G minor, a piece transmitted in a manuscript copy from Bach’s circle.

Bach and his German contemporaries devoted much of their compositional efforts to adapting and merging the French and Italian national styles. Thus Bach studied and held in high esteem the works of Antonio Vivaldi and François Couperin. The combination of German, Italian and French elements eventually yielded the highly expressive and galant mixed style that became the great composer’s legacy to his sons and students.

In the final concert of the thirty-second season of the Boulder Bach Festival, Zachary Carrettin, violin, and Rick Erickson, harpsichord and organ, will join forces as Duo Crezdi in an artist recital at First Congregational Church in Boulder, Colorado at 7:30 pm on Friday, 3 May 2013.

The violin sonatas on the program will come from very different places and times. The earliest is Dario Castello’s Sonata Prima in A minor from Libro secundo. Diligent scholarship has not been able to determine any exact dates for Castello’s birth or death. In fact, almost no shreds of biographical evidence exist about the composer. This much is known: Castello lived much of his life in and around Venice. He was an excellent wind player and a master of the bassoon, an instrument which was very popular in Venice at the time. He published two books of sonatas in 1621 and 1629, which were so popular that they were reprinted in the 1640s and 50s. His sonatas are made up of a number of short contrasting sections and the work to be performed by the Duo Crezdi is no exception. As one of the first to write idiomatically for the violin, Castello’s music has a refreshing and delightful spontaneity about it which is easy to hear even four hundred years later.

Biber’s (1644-1704) Passacaglia stands as the last piece in the composer’s ambitious cycle of Rosary Sonatas. For each of the fifteen Sacred Mysteries, Biber composed a violin sonata, but each one is in a different tuning, or scordatura. In the sole surviving copy of the score, every sonata is prefaced by a lovely copper engraving. The Passacaglia is the last piece in the cycle, and the only one for violin without continuo. It is the only sonata that “duplicates” an earlier tuning for the violin – in this case, the ordinary tuning G – D – A – E. The Passacaglia consists of sixty-five repetitions of a descending tetrachord (four-note motive) in which all manner of harmony, melody and expression appears. In the middle of the piece, the descending motive even appears in an upper voice, complicating matters for the interpreter. Claiming the prize as probably the most elaborate composition for solo violin up to that time, Biber’s Passacaglia almost surely had some influence on J. S. Bach when he composed, some decades later, his own magnificent Chaconne in D minor (BWV 1004) for solo violin.

Chronologically speaking, the Bach and Veracini sonatas date from almost the same time. Bach’s six accompanied sonatas for violin and keyboard were composed no later than 1725, and the composer continued to tinker with them for many years thereafter. The Sonata in C minor (BWV 1017) is cast very much in the mold of a trio sonata. As Peter Wollny noted, each part (violin, keyboard right hand, keyboard left hand) has its own rhythmic character in the slow movements. For example, in the third movement the violin has a lyrical melody, the right hand of the keyboard has continuous triplets, and the left hand has a bass line mostly in quarter notes. The two fast movements feature dense counterpoint and imitative textures, perfectly in keeping with the idea that each part should be interesting and meaningful in and of itself.

Antonio Veracini (1659-1733) led a colorful life and held important posts in Florence and Dresden. As the story goes, he once claimed that “as there is one God, there is one Veracini.” Without lacking a sense of drama either in life or in music, Veracini once jumped out of a building during an argument in Dresden. He even survived a shipwreck in the English Channel. Veracini’s nephew diplomatically wrote that “the heart, rather than cleverness, guided [Veracini’s] finger and bow.” Of his many published violin works, Veracini’s Sonata in G minor (appearing in 1721 as op. 1, no. 1) is an intense, many-colored piece. Opening with a broad French-style introduction, it quickly moves through an impetuous Allegro before settling into a more lyrical Aria. The anxious Allegro that follows contains several outbursts that might have given even the stoic Bach a severe case of indigestion. The final two movements, a short Minuet and an almost ridiculous Gigue that alludes to the sound of the postman’s bell, do little to dispel the image of an undeniably brilliant, yet slightly unstable, musical mind.

Two works for organ on the concert will feature compositions by men who were close to the Bach circle personally. Johann Ludwig Krebs (1713-1780) studied with Bach in Leipzig. The use of the letters of Bach’s name in the fugue subject reflect an ancient practice, dating back to Josquin, called soggetto cavato (“carved subject”) where the letters of a name determine the musical notes. We therefore have, according to German spelling, a subject of B-flat, A, C, B-natural.

Georg Böhm (1661-1733) was connected to the Bach family from his studies in Ohrdruf, a town which knew several generations of Bachs. Böhm might have tutored the young J. S. Bach but there is no direct evidence to support this assertion. Much later, C. P. E. Bach claimed that his father, J. S., loved to study Böhm’s music. Böhm’s Vater unser im Himmelreich is stylistically much like Buxtehude’s music. It is probably one of the most expressive works he penned. Particularly noteworthy is Böhm’s exploration of the organ’s high coloratura register.

The remaining works by J. S. Bach will show his mastery both of small-scale and large-scale musical forms. The Duetto no. 3 in G Major (BWV 804) is similar in texture to one of Bach’s famous Fifteen Inventions (BWV 772-86), but it is more extended and elaborate. Bach derives an entire motivic menagerie by exploring the possibilities of a simple seven-note cell, heard at the beginning in the right hand. Contrasting with this small scale form, the chorale partita for organ on Sei gegrüsset, Jesu gütig (BWV 768) is an extended set of variations on a chorale tune. This is the most ornate of the four sets of chorale variations Bach left us and contains eleven variations on the tune. The variations range from simple to elaborate and give us a full spectrum of Bach’s powers of inventiveness.